Add Libra statistics worker framework.

The statistics worker (libra_statsd) is designed to run on a server
and act as a collection point for statistics from Libra worker processs.
The workers will send their statistics to libra_statsd via a common
Gearman function. These stats will be stored in a database for consumption
by other processes.

Change-Id: Ia9e7400275459fc43dce580146ca6b28cf367b3f

libra/statsd/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2012 Hewlett-Packard Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.

libra/statsd/main.py

@@ -0,0 +1,17 @@
+# Copyright 2012 Hewlett-Packard Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+
+def main():
+    return 0

setup.py

@@ -77,6 +77,7 @@ setuptools.setup(
             'libra_worker = libra.worker.main:main',
             'libra_pool_mgm = libra.mgm.mgm:main',
             'libra_client = libra.client.client:main',
+            'libra_statsd = libra.statsd.main:main',
         ]
     },
     cmdclass=ci_cmdclass,